Planograph co



H. w. BRENT. OIL BURNER.

APPLICATION FILED JAN-1. 1919- I THE COLUMBIA PLANOGRAPH c1, WASHINGTON. I). C.

HENRY W. BRENT, OF BALTIMORE, MARYLAND.

OIL-BURNER.

Specification of Letters Patent.

Patented'Aug. 12, 1919.

Application filed January 7, 1913. Serial No. 270,056.

To all whom it may concern.

Be it known that I, HENRY W. BRENT, a citizen of the United States, residing at Baltimore, State of lVIaryland, have invented certain new and useful Improvements in Oil- ,Burners, of which the followingis a'specification.

This invention relates to certain new and useful improvements in burners of oil stoves and it has for a leading object to improve the construction of the burner and the adjustment of the wick so as to minimize the danger of fire and maintain the WIlClQ,

whether visible or invisible, atsuch position that there will result a fine blue flame under normal working conditions; the arrangement being such that the wick may be adjusted the right position to attain the desired result and without necessarily requiring inspection of the flame and by a simple single movement of an operating mechamsm. I

The present invention is an improvement of the oil burner disclosed in my former Patent No. 1,082,796, dated December 30, 1913, although the salient features of the wick operating mechanism may be employed with other types of burners without departing from the spirit of my invention.

With the above and other objects in view myinvention consists of the parts and the constructions, and arrangements and 001m binations of partsxwhich I will hereinafter describe and claim.

In the accompanying drawing forming part of this specification, and in which similar reference characters indicate like parts in the several views Figure 1 is a side elevation of a burner tube embodylng my lnvention, showlng a portion of the tube broken away.

Fig. 2 is a top plan viewof the same.

Fig. 3 is a longitudinal sectional view of the wick adjusting and controlling mechanism, on the line 22 of Fig. 2.

Fig. 1 is a cross sectional view on the line H of Fig. 1.

Fig. 5 is. a side view of the hand wheel, 14, and a fragment of the upper portion of the tube, 11, and shaft, 12.

In carrying out my invention I may use the present improvements in connection with the different types of burners, either with or without the usual spreadenplates, but for illustrative purposes I have shown said im provements as applied to the type of burner disclosed in my aforesaid prior patent, and which burner usually has a spreader-plate surmounting the burner tube, as shown by dotted lines in Fig. 1. The particular means for supporting and adjustin'g'the spreaderplate form no essential part of the present 7 invention and hence they arenot disclosed,

but it will be understood that any well own and appropriate means, such for in: stance as disclosed-in said former patent, may be used if desired. I

Theburner tube A, is preferably formed with concentric inner' and outer walls, joined at the bottom and adapted to inclose between them a circular fiat wick, A", the space between the inner and outer walls of the burner tube forming a font or receiver, to which oil is supplied through a connection a, in the usual manner.

On the outside of the burner is a housing, 10, from which extends upwardly at an angle a tube, 11, which forms a long bearing for a wick-operating shaft, 12, on the lower end ofwhich, within the housing and operating through a slot in the outer wall of the burner tube are'toothed wheels, 13, which are designed to engage the wick to raise and lower the same in a manner Well known in this art, said shaft having at its upper and outer end a rotatable and reciprocable hand wheel, 14, or other device by which the shaft may be turned to adjust the wick and the construction and operation of which hand wheel I will hereinafter more fully describe. g

Fixedly secured to the sleeve or tube 11, and extending substantially at right-angles thereto, is a plate or sector, 15, provided with suitable indicating marks or graduations, 16, 17, over which is designed to operate a pointer, 18, fiXB'dlY'SBC'UlGCl to and extend- .1I1g-fIOIIl a ratchet wheel, 19, which is turning is effected through the hand wheel, M, and suitable connections which I will presently describe.

One face of the ratchet Wheel is provided with a pin or stud, 23, and on the tube, 11, is a pin or stud, 24, with which the pin of the ratchet-wheel is adapted to contact during a certain period of rotation of the wickoperating shaft, the ratchet-wheel being slotted at a point between the aforesaid pins, as shown at 25, to admit one end of a small spring, 26, which is designed to normally bear against the pin, 2%; the other end of the spring is secured to the opposite face of the ratchet-wheel, and the two pins being arranged to form a stop to limit the turning of the wick raising shaft to the right beyond a predetermined point, and the consequent predetermined elevation of the wick to such point that the desired blue flame is obtained. Secured to the wick raising shaft, 12, is a bracket or arm, 27, the outer end of which is forked to receive a lever, 28, which is pi r oted within the forked portion of the bracket and has its lower end formed as a pawl, 29, adapted to engage and disengage the teeth of the ratchet-wheel, 19; the upper end of the pivoted lever, 28, extending along the shaft and being substantially canrsliaped, or inclined outwardly, and being slidably guided in an opening formed in a disk, 30, on a sleeve, 31, which is rigid with and spaces the disk from the hand-wheel, 14,

said sleeve being slotted on both sides, to receive a cross pin, 32, carried by the wickraising shaft and serving to guide the sleeve and its attached hand-wheel and disk in a direction longitudinal of the shaft, the length of the slot determining the distance which the hand wheel may be reciprocated relatively to the shaft, and the pin, 32, serving, also, as a means for transmitting rotary movement from the hand-wheel to said shaft.

As before stated, both sides of the sleeve, 31, are slotted to receive the cross pin, 32, and the head of this pin is designed to coact with a spring-plate, 33, secured to the sleeve and serving, by bearing against the head of the pin, to frictionally hold the slotted sleeve and the hand-wheel and attached parts at the limit of the outer and inner reciprocal movement thereof, thereby overcoming the liability of the accidental displacement or change of position of the hand wheel relatively to the shaft, and the unlocking of the locked ratchet wheel, after said wheel has been moved in either of its two directions, in or out, it being understood that when the hand-wheel is being pulled outwardly on the wick-raising shaft, the inclined or cam-end of the lever, 28, will be moved inwardly thereby rocking the lever about its pivot and lifting the pawl-end of said lever out of its connection with the ratchet wheel, and allowing this wheel, which I now assume has been rotated and is under the tension of the spring, 21, to be returned to normal position by said spring.

hen the hand-wheel is pulled outwardly on the shaft it is held in that position by a bowed portion of the spring, 33, and with the pawl, 29, out of engagement with the teeth on the ratchet-wheel, and the wickraising shaft may now be freely rotated either to the right or to the left, to accord-- ingly raise or lower the wick as desired, without conununicating rotary motion to the ratchet-wheel. When the hand wheel is pushed inwardly the cam-end of the lever, 28, rides in contact with the wall of the opening in the disk, 30, and the lever is caused to turn on its pivot and its pawl-end to be forced into engagement with the teeth on the ratchet-wheel; a bowed portion of the spring, 33, will now hold the handwheel and its adjuncts in this position and against accidental movement in an outward direction.

In operating the device, say, for illustration, whenbecause of consumption of the wick the position of the latter must be changed to insure proper combustion, the hand-wheel is pulled outwardly and the wick operating shaft is turned, through the hand wheel, to bring the top edge of the wick at such distance above the burner tube, A, that the now projecting carbonized portion of the wick may be removed by a wiping action, or otherwise. Then, when the handwheel is pressed inwardly, the pawl, 29, is caused to engage the teeth on the ratchet wheel, thus locking the latter to the shaft, 12. The hand-wheel may now be turned to the right only until the stop pins, 23, and 24, come into contact as further movement of the ratchet-wheel in the same direction and consequently a further rotation of the wickraising shaft cannot possibly occur. In the meantime, the pointer, 18, has been moved from the point, 16, on the plate, 15, to the point 17 the distance between these two points indicating the proper elevation of the wick above the top of the burner tube, A. Thus there is provided a fixed and predetermined stop and a visual indication, independent of observation of the flame itself, of the extent to which the wick has been raised, and a positive means for insuring the elevation of the wick only to such point that the desired blue flame can be obtained and i'naintained. Of course, the wick may be turned down, say, to extinguish the flame by turning the operating shaft to the left since there are no stop-means employed for limiting rotation in that direction, except that not more than a complete rotation is possible even to the left because of the presence of the aforesaid contact pins, 23, 24:.

The foregoing provides a simple means for limiting the wick raising function to only a short distance, in one direction, .for burning purposes, and providing for-a more extended wick-lowering action, in' another direction, it being understood that at the conclusion of partial rotation in either di rection, the hand wheel and its associated partsmay be slid outwardly on the operating shaft to thus trip the pawl and release the loose ratchet wheel from fixed. connecwick-operating means having the capacity of positively stopping the elevation of the wick during a complete movement of said height above said tube, .mea'ns independent means in one direction so as to set the'wick at a fixed and -prcdetermined maximum height above said tube, and automatically operating means for resetting the wick opcrating means. V v

' 2. Inan oil burner, the combination with aburner tube adapted to contain a'wick, of wick-operating means having the capacity ofpositi'vely stopping the elevation of the wick during a complete movement of said means in one direction so as to set the wick at a fixed and predetermined maximum of the flame'for visually indicating the extent of said. wick elevating movement, and means foi'--ai'itomatically resetting the w ck operating means.

3. In an oil burner, the combination with a burner tube adapted to contain a wick, of wick elevating and lowering means and other means co-acting with the first named meansfor positively stopping the elevation of the wick at a fixed and predetermined height above the top of the burner tube, and spring actuated means for automatically resetting the wick operating means.

L In an oil burner, the combination with a burner tube adapted to contain a wick, of a wick raising and lowering shaft, a spring actuated member loose relative to the shaft, co-acting stops one of which is carried by said member adapted to limit the rotation of said member to a predetermined and substantially short distance in the wick-r nsing direction and thereby fix the maximum height of the wick in its burning position, and selective means for connecting and disconnecting said member and the wick-actuating shaft.

5. In an oil burner, the combination with a burner tube, adapted to contain a wick, of a wick raising and lowering shaft,- a ratchet-- -wheel circumscribing the shaft and loosely mounted relatively thereto, co-acting stops one of. which is fixed and the other is carried by said ratchet-wheel, said stops adapt ed to limit the rotation of the wheel to a pre- 7 determined and substantially short distance in the wick raising direction, to thereby fix the maximum height of the wick in its burning position, and selective means for connecting and disconecting said wheel and the wick raising shaft.

6. In an Oil burner, the combination with a burnertube adapted to contain a wick, of a wick raising and lowering shaft, a member concentric with the shaft and loosely mo uiited relatively thereto, coacting stops one fixed and the other on said wheel, said'stops normally separated a distance substantially equal to the maximum distance the wick can move in one direction and said stops adapted to contact to prevent the elevation of the Wick beyond a predetermined maximum height, and selective means for connecting anctdiseonnecting said ratchet-wheel and the wick actuating shaft. 1

7. In an oil burner, the combination with a burner tube adapted to contain a wick, of a wick raisingand lowering shaft, a ratchetwheel concentric with the shaft and loosely mounted relatively thereto, a spring connect-- ing with the wheel adapted to return the same to anormal position after said wheel has been partially rotated in one direction, eo-acting stops one of which is carried by said wheel adapted to limit the rotation of i the wheel to a predetermined and substantially short distance in the wick raising direction and thereby fix the maximum height ofthe wick in its burning position, and selective means for connecting and disconnect ing said wheel and the wick actuating shaft. 8. Inan oil burner, the combination with a burner tube adapted to contain a wick, of a wick raising and lowering shaft, a ratchet wheel concentric with the shaft and loosely mounted relatively thereto, a spring connecting with the wheel adapted to return the same to a normal position after said wheel has been partially rotated in one direction, coacting stops one of which is carried by said wheel adapted to limit the rotation of the wheel to a predetermined and substantially short distance in the wick raising direction and thereby fix the maximum height of the wick in its burning position, selective means for connecting and disconnecting said wheel and the wick actuating shaft, said selective means comprising a pivoted lever having at one portion a pawl to removably engage th ratchet wheel and having another portion serving as a cam, and a part slidably mounted on the shaft and actuating said lever to lift the pawl out of engagement with the ratchet wheel and disconnect the wheel with the shaft when said part is longitudinally moved in one direction, and to connect the pawl with said ratchet wheel when said part is moved in another direction.

9. In an oil burner, the combination with a burner tube adapted to contain a wick, of a wick raising and lowering shaft, a ratchet wheel concentric with the shaft and loosely mounted relatively thereto, a spring connecting with the wheel adapted to return the same to a normal position after said wheel has been partially rotated in one direction, co-acting stops one of which is carried by said wheel adapted to limit the rotation of the wheel to a predetermined and substantially short distance in the wick raising direction and thereby fix the maximum height of the wick in its burning position, selective means for connecting and disconnecting said wheel and the wick actuating shaft, said selective means comprising a pivoted lever having at one portion a pawl to removably engage the ratchet wheel and having another portion serving as a cam, a part slidably mounted on the shaft and actuating said lever to lift the pawl out of engagement with the ratchet wheel and disconnect the wheel with the shaft when said part is longitudinally moved in one direction, and to connect the pawl with said ratchet wheel when said part is moved in another direction, and a cross pin extending through the shaft and said sliding part and permitting the same to be rotated in unison.

10. In an oil burner, the combination with a burner tube, adapted to contain a wick, of a wick raising and lowering shaft, a ratchet wheel concentric with the shaft and loosely mounted relatively thereto, a coiled spring connecting with the wheel adapted to be wound when the wheel is turned in one direction, and to unwind and return the wheel to normal position, said wheel having a pointer, an indicating plate over which the pointer operates, said plate having indicating marks thereon, co-acting stops one of which is carried by said wheel adapted to limit the rotation of the same to a predetermined and substantially short distance in the wick raising direction to thereby fix the maximum height of the wick in its burning position, a spring connected to the wheel adapted to separate the stops and rotate the wheel to return the pointer to zero position, means including a pivoted pawl for engaging the ratchet wheel to'lock the same to the wick actuating shaft, and a reciprocating parton said shaft for actuating the pawl and for rotating said shaft.

11. In an oil burner, the combination with a burner tube and a wick actuating shaft, a spring actuated ratchet-wheel concentric with the shaft and loosely mounted relatively thereto, means for predetermining the rotation of the ratchet-wheel in one direction and limiting the rotation of said wheel to substantially a short distance in the wick raising direction to thereby fix the maximum height of the wick in its burning position, a pivotal pawl carried by the shaft adapted to engage the ratchet wheel to lock the same to the shaft, said pawl having an extension, a sleeve mounted on the upper end of the shaft and slidablymounted on the shaft, said sleeve having a disk with an opening through which the extension of the pawl projects whereby the pawl is operated by the reciprocal movements of said sleeve, said sleeve having an operating finger piece, a guide pinon the shaft passing through said sleeve, and means for locking the sleeve at the conclusion of its inward and outward reciprocation.

In testimony whereof I affix my signature.

HENRY vw. BRENT.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, I). C. 

